Import fbx from Nuke/ Maya and have the correct orientation
I find a way to fix the rotation , this is my setup in fbx import parameter :  turn on manual orientation and set forwar to -Z forward and up to Y up. Then DO NOT use the camera directly , but used it as reference only. Create a new camera, go to constraint property and choose 'child of' and select the original camera as parent. now clear out all translation/rot/scale of the new camera and set X and Z rotation to 180. Now i can see through the new camera.